Update react docs to newest api

[fhammerschmidt]

I added a new v0.12.0 docs version to the rescript-11 branch. It only needs to be updated

Below are the relevant changes from the changelog for reference

• Deprecated use*N functions in favor of changing the signature of the main hook function.
  • For example, useEffect instead of useEffectN e.g. useEffect3(f, (a, b, c)) -> useEffect(f, (a, b, c))
  • The affected hooks include useEffect, useLayoutEffect, useCallback, useMemo, useImperativeHandle, useInsertionEffect
  • With this change, it is now possible to pass any value as the second argument 'deps. In case you pass an invalid value, you will get a warning from React at runtime. You should be using one of the following values for the dependency array:
    • 0 dependencies: []
    • 1 dependency: [a]
    • more than 1 dependency: (a, b, ...)
• For calling useEffect, useLayoutEffect etc. without a dependency array (meaning that the effect is executed on every render), there are now separate bindings useEffectOnEveryRender, useLayoutEffectOnEveryRender etc.
• Added React.lazy_.